Visual Sampling Predicts Hippocampal Activity

Overview

Journal J Neurosci

Specialty Neurology

Date 2017 Jan 20

PMID 28100742

Citations 38

Authors

Zhong-Xu Liu

Kelly Shen

Rosanna K Olsen

Jennifer D Ryan

Affiliations

Soon will be listed here.

Abstract

Significance Statement: The hippocampal and oculomotor networks have each been studied extensively for their roles in the binding of information and gaze function, respectively. Despite the evidence that individuals with amnesia whose damage includes the hippocampus show alterations in their eye movement patterns and recent findings that the two systems are anatomically connected, it has not been demonstrated whether visual exploration is related to hippocampal activity in neurologically intact adults. In this combined fMRI-eye-tracking study, we show how hippocampal responses scale with the number of gaze fixations made during viewing of novel, but not repeated, faces. These findings provide new evidence suggesting that the hippocampus plays an important role in the binding of information, as sampled by gaze fixations, during visual exploration.

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